ex·tract /ɪkˈstrækt, ||5 ˈɛkˌ/
榨出物,精汁,選粹(vt.)摘錄,析取,吸取
ex·tract /ɪkˈstrækt/ 及物動詞
拔出,取出,提取,浸出物,抽提,提取液,提出物,浸膏,萃,萃取,蒸餾出,抽出,拔出,摘錄,選錄,推斷出,浸膏,提取物
extract
擷取; 抽取; 萃取
extract
取 萃取 擷取
Ex·tract v. t. [imp. & p. p. Extracted; p. pr. & vb. n. Extracting.]
1. To draw out or forth; to pull out; to remove forcibly from a fixed position, as by traction or suction, etc.; as, to extract a tooth from its socket, a stump from the earth, a splinter from the finger.
The bee
Sits on the bloom extracting liquid sweet. --Milton.
2. To withdraw by expression, distillation, or other mechanical or chemical process; as, to extract an essence. Cf. Abstract, v. t., 6.
Sunbeams may be extracted from cucumbers, but the process is tedious.
3. To take by selection; to choose out; to cite or quote, as a passage from a book.
I have extracted out of that pamphlet a few notorious falsehoods. --Swift.
To extract the root Math., to ascertain the root of a number or quantity.
Ex·tract n.
1. That which is extracted or drawn out.
2. A portion of a book or document, separately transcribed; a citation; a quotation.
3. A decoction, solution, or infusion made by dissolving out from any substance that which gives it its essential and characteristic virtue; essence; as, extract of beef; extract of dandelion; also, any substance so extracted, and characteristic of that from which it is obtained; as, quinine is the most important extract of Peruvian bark.
4. Med. A solid preparation obtained by evaporating a solution of a drug, etc., or the fresh juice of a plant; -- distinguished from an abstract. See Abstract, n., 4.
5. Old Chem. A peculiar principle once erroneously supposed to form the basis of all vegetable extracts; -- called also the extractive principle. [Obs.]
6. Extraction; descent. [Obs.]
7. Scots Law A draught or copy of writing; certified copy of the proceedings in an action and the judgement therein, with an order for execution.
Fluid extract Med., a concentrated liquid preparation, containing a definite proportion of the active principles of a medicinal substance. At present a fluid gram of extract should represent a gram of the crude drug.
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extract
n 1: a solution obtained by steeping or soaking a substance
(usually in water) [syn: infusion]
2: a passage selected from a larger work; "he presented
excerpts from William James' philosophical writings" [syn:
excerpt, selection]
v 1: draw or pull out, usually with some force or effort; also
used in an abstract sense; "pull weeds"; "extract a bad
tooth"; "take out a splinter"; "extract information from
the telegram" [syn: pull out, pull, pull up, take
out, draw out]
2: get despite difficulties or obstacles; "I extracted a
promise from the Dean for two ne positions"
3: deduce (a principle) or construe (a meaning); "We drew out
some interesting linguistic data from the native
informant" [syn: educe, evoke, elicit, draw out]
4: extract by the process of distillation; "distill the essence
of this compound" [syn: distill, distil]
5: separate (a metal) from an ore
6: obtain from a substance, as by mechanical action; "Italians
express coffee rather than filter it" [syn: press out, express]
7: take out of a literary work in order to cite or copy [syn: excerpt,
take out]
8: calculate the root of a number